CHARGED PARTICLE BEAM INTENSITY DISTRIBUTION VARIABLE DEVICE, CHARGED PARTICLE BEAM INTENSITY DISTRIBUTION VARIABLE METHOD, SECONDARY PARTICLE GENERATION DEVICE, AND RADIOACTIVE ISOTOPE GENERATION DEVICE

• Main Authors: FUKUDA MITSUHIRO, YURI YOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 07.05.2020
• Subjects: ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GAMMA RAY OR X-RAY MICROSCOPES; IRRADIATION DEVICES; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PHYSICS; PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS; TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOTOTHERWISE PROVIDED FOR

To provide a charged particle beam intensity distribution variable device, a charged particle beam intensity distribution variable method, a secondary particle generation device, and a radioactive isotope generation device that can form a charged particle beam having a hollow beam intensity distribution.SOLUTION: A charged particle beam intensity distribution variable device (1) includes: an accelerator (5) that accelerates and radiates a charged particle beam generated at an ion beam source; and multipole electromagnets (50) at least one or more of which are provided on a traveling path of the charged particle beam radiated from the accelerator and which have magnetic poles having six or more poles to form a magnetic field having a non-linear magnetic flux density distribution. It generates a charged particle beam having a hollow beam intensity distribution by making the charged particle beam pass inside the multipole electromagnets.SELECTED DRAWING: Figure 1 【課題】中空状のビーム強度分布を有する荷電粒子ビームを形成することができる荷電粒子ビーム強度分布可変装置、荷電粒子ビーム強度分布可変方法、二次粒子生成装置、及び放射性同位体生成装置を提供すること。【解決手段】荷電粒子ビーム強度分布可変装置(1)は、イオンビーム源において生成される荷電粒子ビームを加速して出射する加速器(5)と、加速器から出射される荷電粒子ビームの進行経路上に少なくとも１つ以上設けられ、６極以上の磁極を有し非線形の磁束密度分布を有する磁場を形成する多重極電磁石(50)と、を具備し、多重極電磁石内に、荷電粒子ビームを通過させて、中空状のビーム強度分布を有する荷電粒子ビームを生成する。【選択図】図１